Furniture-tread.



V. & S. 3. VON DER LIN.

FURNITURE TREAD.

APPLICATKOHIFILED SEPT. H2, 1916.

ma ma v Patented June 12, 1917.

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UNTTBD STATES PATENT @FFTQRE.

VALENTINE VON DER LIN, OF NEW YORK, AND SIMON J. VON DER LIN, 0F BROOKLYN, NEW

YORK.

FURNITURE-TREAD.

Specification of Letters Patent.

Patented June 12, 1917.

Application filed September 18, 1916. Seria1 No. 120,595.

To all whom it may concern:

Be it known that we, VALENTINE VON DER LIN, a citizen of the United States, and a resident of the borough of Manhattan, city, county, and State of New York, and SIMON J. VON DER LIN, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in F urniture-Treads, of which the following is a specification.

Our present invention'is an improvement on the form of furniture tread set forth in Letters Patent No. 1,173,990, issued to us February 29, 1916, and designed to aiiord a simple, cheap and effective adjustable tread for application to the legs or supports of tables or other articles of furniture, whereby variations in length of support or inequalities of floor surface may be conveniently and expeditiously compensated for; our object being to still further simplify the structure of the device by dispensing with extraneous means of copulation of parts, thereby rendering it self-contained in that the means of copulation between the U-shaped tread and its supporting post is internally and axially arranged in contra-distinction to the use of radially arranged protuberant set screws as shown in said Letters Patent, all as hereinafter more fully set forth.

In the accompanying drawings,

Figure 1, shows our adjustable tread in elevation Fig. 2, is a central vertical sectional elevation of the same and the lower part of the furniture support to which it is applied, as upon plane of line 22, Fig. 3;

Fig. 3, is a view of the under side of the device;

Fig. a, a detail elevation of the screw post;

Fig. 5, a detail elevation of the tread;

Fig. 6, is a transverse section taken upon plane of line 66, Fig. 2;

Fig. 7, is a detail of the coupling, member.

lVhat is designated as the base plate B, is rigidly attached to the leg or support L, of a table or other article of furniture by the use of any well known mechanical eX- pedient, as by the use of screws 3, s, passing through screw holes 5, 5, formed for the purpose in said base plate B, as indicated more particularly in Figs. 2, and 3, of the drawings. The base plate B, is th Support for the hollow post B, which is formed with the peripheral thread Z), for engagement with the female screw thread t, formed in the hollow cup-shaped tread member T, which is U-shaped in longitudinal section, the closed bottom thereof forming the actual bearing or tread. t, for contacting directly and centrally (axially as related to the length of the tread considered as a whole) with the floor 7", or other furniture sustaining surface.

The U-shaped tread member T, and its supporting screw post B, are coupled together b; an axially positioned rod or inner post 0, attached to the closed bottom t, of the tread member T, and extending upward therefrom into the hollow post B, as shown particularly in the sectional view Fig. 2. This coupling member C, consists preferably of a pin or stud the lower end of which is inalescrew threaded for engagement with a female screw thread t formed for its reception in the closed bottom 6', of the tread member; the upper end of the coupling rod C, being formed with a head 0, of greater diameter than that of the opening 6 in the lower end ofth'e hollow post B, through which the coupling rod protrudes. In other words, the lower end of the screw post B, is closed except for the said opening 5 of less diameter than axial bore or hollow 5 of said post so as to form an annular retaining shoulder 5 which, by contacting with the head 0, of the coupling rod C, limits the degree of adjustment between the parts and at the same time con nects them permanently, in that the tread member T, cannot be removed from its supporting screw post B, unless the coupling screw or rod 0, be first removed,and this obviously cannot be done while the base plate B, is attached to the furniture.

By nicking the head 0, of the coupling pin C, the lower end of the latter may be readily screwed more or less into the bottom of the tread member T, thereby regulating the distance between the said head 0, and the shoulder 5 at the bottom of the main post B, and hence prescribing the extent of adjustment of the tread member T, 011 said supporting post B.

We have found by experience that it is not necessary to clamp the tread member to the supporting post after the adjustment of the tread member to effect a proper floor contact, because the frictional resistance between the engaging screw threads is sulficient to hold the tread member against turning under ordinary conditions of use; and by eliminating all extraneous projections, such as the laterally protruding retaining screws shown in our aforesaid patent, we obviate all danger of entanglement with extraneous objects, especially ladies skirts (a consideration of importance in connection with dining tables in hotels, etc.) and at the same time render the device self-contained and more symmetrical in external appearance.

Furthermore, the coupling pin C, tends to strengthen and centralize the tread member T, upon its sustaining post B, and to compensate for lateral strain.

It is to be understood that the term head 0, of the coupling member C, is intended to include any form of retainin shoulder that will perform the same function; and in like manner that the inturned retaining shoulder b, on the supporting post B, is not necessarily annular, but may be of any form that will act in conjunction with the head 0, to couple the tread T, to its supporting post B, in such manner that it cannot be removed therefrom, while allowing a prescribed extent of longitudinal adjustment of the tread on said supporting post.

What We claim as our invention and sire to secure by Letters Patent is,

1. The furniture tread herein described, comprising a base plate, means for attaching the same to a furniture leg or support,- a hollow peripherallyscrew-threaded supporting post on said base formed with an inturned shoulder, an internally-threaded tread member U-shaped in longitudinal cross section engaging with said threaded sup porting post, the closed end of said tread member forming a central axial contact sur- Gopies of this patent may be obtained for five cents each, by addressing the face for the purpose set forth, and an axially positioned coupling member attached to the closed bottom of the tread member and extending upward into the hollow supporting post and provided with a retaining shoulder opposed to the inturned retaining shoulder on said supporting post.

2. The furniture tread herein described, comprising a base plate, means for attaching the same to a furniture leg or support, a hollow peripherally-screwthreaded supporting post on said base formed with an inturned shoulder, an internallythreaded tread member U-shaped in longitudinal cross section engaging with said threaded supporting post, the closed end of said tread member forming a central axial contact surface for the purpose set forth, and an axially positioned coupling member consisting of a screw stud engaging the closed bottom of the tread member and extending upward into the hollow supporting post and formed with a head over-lapping the inturned retaining shoulder on the said supporting post. p

3. The furniture tread herein described, comprising a base plate, means for attaching the same to a furniture leg or support,

a hollow peripherally-screw-threaded supporting post on said base formed with an inturned shoulder, an internally threaded tread member engaging with said threaded supporting post, and an axially positioned coupling pin attached to the tread member and extending upward into the hollow supporting post and provided with a retaining shoulder opposed to the inturned retaining shoulder on said post.

VALENTINE VON DER LIN. SIMON J. VON DER LIN. itnesses MARTHA NIELUHR, EUGENE F. J ANE.

Commissioner of Patents,

Washington, D. G. 

